Bump pbr from 6.1.1 to 7.0.0

Bumps [pbr](https://docs.openstack.org/pbr/latest/) from 6.1.1 to 7.0.0.

---
updated-dependencies:
- dependency-name: pbr
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -14,7 +14,7 @@ importlib_metadata==8.7.0
 Jinja2==3.1.6
 MarkupSafe==3.0.2
 packaging==25.0
-pbr==6.1.1
+pbr==7.0.0
 Pygments==2.19.2
 pyparsing==3.2.3
 pytz==2025.2